Injection method for locating vessel lumen
First Claim
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1. A method of locating a vessel lumen to enable placement of a vascular hole closure device comprising the steps of:
- providing an elongated instrument;
providing a syringe having a plunger and containing a fluid therein;
connecting the syringe to the elongated instrument;
exerting a force on the plunger as the elongated member is inserted through the tissue towards the vessel wall; and
determining entry of the elongated instrument into the vessel lumen by detecting movement of the plunger to eject the fluid.
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Abstract
A method of locating a vessel lumen to enable placement of a vascular hole closure device comprising the steps of providing a syringe containing a fluid therein, connecting the syringe to an elongated instrument, exerting a force on the syringe plunger as it is inserted through the tissue towards the vessel wall, and detecting movement of the syringe to eject the fluid to determine entry of the elongated instrument into the vessel lumen.
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Citations
12 Claims
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1. A method of locating a vessel lumen to enable placement of a vascular hole closure device comprising the steps of:
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providing an elongated instrument;
providing a syringe having a plunger and containing a fluid therein;
connecting the syringe to the elongated instrument;
exerting a force on the plunger as the elongated member is inserted through the tissue towards the vessel wall; and
determining entry of the elongated instrument into the vessel lumen by detecting movement of the plunger to eject the fluid. - View Dependent Claims (2, 3, 4, 5)
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6. A method for locating a vessel lumen and placing a vascular aperture closure device inside the vessel lumen comprising the steps of:
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providing an introducer sheath having an opening therein;
providing a syringe containing fluid communicating with an interior of the sheath;
depressing a syringe plunger to eject the fluid through the opening in the sheath as it is inserted through the tissue towards the vessel wall, the degree of depression being relatively small as the sheath remains within the tissue and outside the vessel;
detecting a change in the depression of the syringe plunger to indicate greater ejection of fluid to thereby indicate that the sheath is through a tissue tract and through a vessel wall aperture into the vessel lumen; and
inserting a closure member through the sheath and inside the vessel to seal the aperture in the vessel wall. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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Specification